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Listing 1 - 2 from 2 for extinct

Division Lycophyta
... Division Lycophyta is composed of the following: Order Lycopodiales (Clubmosses) There are many living and extinct forms known. The Order possesses one type of spore (homosporous) from which one gametophyte ... The genus is large containing some 180 species. Order Selaginellales (Spikemosses) There are living and extinct forms but only one third as many as the Lycopodiales. This Order possesses 1) ...
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Division Bennettitophyta
Division Bennettitophyta Division BennettitophytaIt is generally believed that the Bennettitophyta and the Cycadophyta evolved from the pteridosperms. The Bennettitales, which led to the development of a flower-like organ became extinct at the end of the Cretaceous. The Cycads evolved unisex cones and persist to the present as nine genera. Return to Main Menu Fossil Plants
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